How far is Dubuque, IA, from Decatur, IL?

The distance between Decatur (Decatur Airport) and Dubuque (Dubuque Regional Airport) is 202 miles / 324 kilometers / 175 nautical miles.

The driving distance from Decatur (DEC) to Dubuque (DBQ) is 249 miles / 401 kilometers, and travel time by car is about 4 hours 49 minutes.

Distance from Decatur to Dubuque

There are several ways to calculate the distance from Decatur to Dubuque. Here are two standard methods:

Vincenty's formula (applied above)

• 201.598 miles
• 324.440 kilometers
• 175.184 nautical miles

Vincenty's formula calculates the distance between latitude/longitude points on the earth's surface using an ellipsoidal model of the planet.

Haversine formula

• 201.675 miles
• 324.565 kilometers
• 175.251 nautical miles

The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance – the shortest distance between two points).

How long does it take to fly from Decatur to Dubuque?

The estimated flight time from Decatur Airport to Dubuque Regional Airport is 52 minutes.

What is the time difference between Decatur and Dubuque?

There is no time difference between Decatur and Dubuque.

Flight carbon footprint between Decatur Airport (DEC) and Dubuque Regional Airport (DBQ)

On average, flying from Decatur to Dubuque generates about 55 kg of CO2 per passenger, and 55 kilograms equals 121 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path and driving directions from Decatur to Dubuque

See the map of the shortest flight path between Decatur Airport (DEC) and Dubuque Regional Airport (DBQ).

Airport information

Origin	Decatur Airport
City:	Decatur, IL
Country:	United States
IATA Code:	DEC
ICAO Code:	KDEC
Coordinates:	39°50′4″N, 88°51′56″W

Destination	Dubuque Regional Airport
City:	Dubuque, IA
Country:	United States
IATA Code:	DBQ
ICAO Code:	KDBQ
Coordinates:	42°24′7″N, 90°42′34″W